Electric lamp



J. w. sENGE'R Er AL ELECTRIC LAMP ocaso, 192s. 1,689,457

Filed March 1, 192e v k I l mente-a e oca 3o, 192s.

UNITED STATES PATENT oFFicE. t

l:mim w. sENGEn., JAMES nEED, AND 'moms EUGEiaE MoonnEnn, or CLEVELAND,

. v omo. r'

ELECTRIC LAMP.

Application iledv March 1, y1926. lSerial No. 91,460.

f ur invention relates to portable .electric lam s and has'for its principal object the pro 'sion of an improved lamp of the above ch acter which will be suitable for use in ations where a b right light is desired for s ort or for relatively long periods of time, s may bedesired, or in situations where vdanger of explosion, fire, or other damage is increased by thef use of flame lamps or torches. A more/specific object of the invention 1s to provide a portable electric lamp that will be particularly suitable for use iii connection with the inspection of ,railway cars and' locomotives and which maybe used to an advantage in various other situations and which will be particularly advantageous in situations where it may be desirable to direct the light 'ra s 'at various angles without holding the bo `y of the lamp at that angle.

jects as will appear from the following der lio scription of the embodiment of our invention shown in the accompanying drawing.

, In the drawin i Fig. 1 is a si e view, with parts broken.

away, of a portable electric lamp constructed in accordance with our invention. l

Fig. 2 is a sectional view taken on lines .2-2 of Fig. 1, looking in the direction ind1- cated by the arrow.`

y Fig. 3 is a fragmentary view of one end of the lamp shown in Fig. 1;' apart of the casing being removed so as to show the internal mechanism, and

` Fig. 4 is a fragmentary view in 'section taken on line 4-4 of Fig. 3.

Referring to the drawing, 10 designatesv a container for two sets ofbatteries 11 and 12. The batteries are preferably of the cylindrical type and .are held in spaced relation to each other by' separate pockets formed by other suitable fastening devices, to a switch' casing 17. The switch casing is made up of a front section 17 anda rear section 17", se-` The invention consists in the new and im-V cured together by means of screws 18'. Upon A switch arm 20 is seside the casing section-17" and is provided with an arm 23 by means of which the switch arm may be moved, 'when desired,r into engagement with .either of the two contact stubs 24 or 25. Stop screws 26 limit the movement of the switch arm 20.

.The Contact studs 24 and 25 are electrically connectedk to the battery terminals 2T-28; the stud'24 being connected with the terminal 27. of battery 12 by means of a wire 29 and spring contact 30, andcontact stud 25 being connected with battery terminal 28 by. means o f a wire 31 and spring contact 32. The spring terminals 30 and 32 are supported in their normal position by means of a plate 33 ofinsulating material supported against shoulder 34 formed on the switch casing. -The shank portions 30m-32a ofthe 'spring contacts are 'slidably supported in .holes in the plate 33 and are held in their normal iposition by springs 35-35 interposed between plate 33 and the contact members 30-32.

of a rod 39 carried by the reflector head 40.-

The circuit makingl and breaking device device 37. A wire 38` V37 may be of anysuitable or preferred construction. In the drawing I have shown a foi-in of snapswitch which is well known and which may be purchased on the open market. The t pe of switch shown consists in part of spring contacts 41-42 connected to the binding-post 43,-44 and a switch member' 45 adapted to be moved into' and out of engagement lwith the contacts by a spring which is tensioned by outward or angular movement of the thumb stud46.

shaped housing formed at its lower end with The reiector head 40 consists of a funnel I a ball 47 which is held against a curved bearing surface 48 of the switch casing, by means of a ball socket plate 49. The ball socket plate 49 is suplported in position by means of springs 5() eld between the socketplate and the nuts 51--52 of screws 51-52. The tension of the springs 50 may be adjusted by turning the nuts 51-52 and thereby exert such pressure as'may be necessary to hold the lo head 40 in any adjusted position and at the same time permit said head to be readily moved to any desired angular position within the range of the universal joint connection of said head and the said switch casing. The 17 rod 39 is slidably supported in a bushing 53 of insulation and is urged outwardly by means of a spring 54. The outer end rot the rod is formed with a at .head which bears against the contact of thelight bulb socketv 'l0 55. The light b ulb socket is provided with a spring cup 56 having a telescopic connection with the cylindrical end portion l57 of the reilector 58. This telescopic arrangement of the members 56 and 57 provides a spring l5 pocket for a coilspring 59. The springs 59 and 54 are normally compressed when thev lamp socket and the reflector are in their normal operative position. The reiiector, in its normal position, bears 4at its outer edge -against a fiber washer 60 on the inner face ofthe lens 61 and is forced inwardly against the Spring 59 by threadin the lens cap 62 upon the threaded end of t ie head 40.

^ The handle 63 is secured to the battery container and is so arranged that the thumb -stud 46 may be actuated bythe thumb of the hand in which the lamp is held.

In opration, the batteries 11 and 12 are container 10. The container is then secured to the switch casing 17, inwhichposition the spring contacts 30--32 enga e the terminal contacts 27, 28 of the batteries. When the switch 20 is in the positionl shown in Fig. 3, theelectric current flows from battery 12 through spring contact 30, wire 29, Contact plug 24, switch arm 2 0, wire 36, through snap switch 37, wire 38 and rod 39 to the contact of vthe light' bulb socket 55.- The electric current after passing through the electric-l light bulb passes through the light socket, the cas- 10, and springs 15 to the zinc-casing of A lthe battery 12.

When it is' desired to use the battery 11 in l 554 stead of the battery 12, thev arm- 23,l on the outside df the casing is pressed downwardly. This movement brings theV inner switch arm into contact with contact plug 25, thereby 1 cutting out the battery 12, and establishing 6 0 an electrical connection from battery 11 throughthe electric light bulb. v The electric circuit in the latter case is the same as that of the former, withv the Vexception that the con- c electric current passes from batter l lthrough spring contact 32, wire 31 an positioned in the respective lpockets of thetact 'plug 25 to the switch arm 20, thence' through the 'same course previously described,

and' returns to the zincof'the battery 11 through the coil spring 14.

While we4 havev described our invention'fin i connection with one specificembodiment,it will be obvious that various modifications in structure may be made without departing from the spirit of our invention.' We therefore wishI it understood thatv our'invention contemplates all suchmodifications in structure as come within the scope of the appended claims.

We claim:

1. Ina portable electric lamp the combination with a light producingeleinent having a grounded connection, of a body casing, a plurality of sources of electric energyI in said casing, a closure for said casing, a par-'- tition of insulating material positioned across said closure member and means for selecf tively connecting any one of said sources of electric energy with the light producing -members carried by said insulating partition and engaging a Acontact of each of said sources, a switchboard having a plurality of means, comprising spring pressed contact contact plugs thereon, electric conductors connecting said plugs with4 said spring contacts, a switch'for selectively engaging any one of said contact plugs, and an electric conductor leading from the switch to said light .producingr means.

2. In a portable electric lamp'the combination with a light producing element having a grounded connection, of a body casing, a secltional switch 'casingremovablyattached .to the body casing, a plurality of sources of electric energy supported in saidA body casing, and

means for selectively connecting' any one of said sources of electric energy with the lightv producing means, contact members forengaging a contact of `each of said electric sources, a switchboard having a plurality. of contact plugs thereon SUP sections of. the switch casing,

tors connecting contacts, a switch for selectively engagingany one of said contact plugs, an electric conductor leading from said switch to said light producing means, and a secondswitch device comprising spring pressed orted on the inner face of one of said y. electriccondugll said'plugs with said .spring f for openin and closing an electric'circuit throulgh said lastinentioned conductor. 3. n a portable lamp', the combinationl lwith a casing for containing a source of electric energy, of .avswitch casing having re-f'- movable sidefsections, a switchboard securedto the innerface of one of ,said sections, a c irf cuit making and breaking device -supporte thereon, vmeans' for project" casing for operating said in ,and breaking device, a reflector and electric light bulb ,SUppOrtin `head clam d vbetween thel sec' .tions of sagid switch Pe casing with'capaci for d las outside of the. f

lao

25 from each of s'aidI pivotal movement, and a second switch device for-opening and closing an electrlc circuit through said light bulb. A

4.111 a portable electric lamp, a casing formed with pockets for the reception of a plurality of batteries, a closurevhead for said casingco'mprising se arable sections secured toget er, a light pro ucing element, a head 1n which saidv l1 ht producing clement `1s supv ported forme at one end with a ball, and fmeans in said closure providing' a rictlon hearing for said ball, whereby the head mayv be/adjusted to various angular positions.

5.- In a ortable electric lamp, a caslng formed witlh pockets for the reception of a plurality of batteries, a closure head for said casin comprising separable sections secured toget er, a light producing element, a 'head f in which said light producing element is supported, formed at one end with a ball, and means in said closure providin a friction bearing for said ball, a switch ard positioned in said closure and formed with a i rality of contact plugs, a connector exten ng p ugs to one of said batteries, a movable switch arm, a connector connecting said switch arm with .said light producing means and means outslde of said closure member for moving said switch arm into and out ofcontact with any one of said contact lugs.

6. n a ortable electric lamp, a casing fformed wit pockets for the reception of n plurality ofbatteries, a light reflector head `formed at one end with a ball, a closure head for said Vcasin com rising separable sectlons having curve bearing surfaces for the ball portion of said reflector head, a ball socket plate disposed within said closure, and spring 4" members for pressing said socket against theball lportlon of said1 light re ector head', whereby t e said reiiector head may adjusted t various positions and .held by friction in said adjusted position.

7 In a portable electric lamp, a casing for the receptlon of a Aplurality of electric batteriesa closure for said battery casing a light 'reector head formed at one'end wi a ball and having a universal connection with said closure, abushing of non-conductin J ma-- t ferial extending throu'gh the b alL endo said reiiector headya rod extending through said `said rod and to said switch arm, and means lu `extending through the ball end o said relates bushingZ a spring for holding one end of the rod against a lamp socket member, a lamp bulb supportedinsaid socket, a partition ofin- 5. sulating material at the open end of said closure memlzgrs, spring terminal members carried by said partition member and bearing against a contact member of each of said batteries, a switchboard having a plurality of contact plugs thereon, electric connectors connecting each of said spri contacts to one of said switchboard contact p ugs, a switch arm an electric connector attached to one end of outside of said closure for moving said switch arm to ut any one of said batteries in circuit wit4 said li ht bulb.

8. In a rtab eclectric lamp, a casing for the reception of a plurality ofvelectric batteries, a closure for said battery casin a light reiector head formed at one end wih a ball and having a universal connection with said closure a bushing of non-conducti material 5 lector head, a rod extending throu h` saidv bushing, a spring for holding one en of the rod a inst a lamp socket, a lamp bulb supportedin said socket, a partition of insulating material at the open end of said `closure, spring terminal members carried by said partition member and bearin against a contact member of each of said atteries, a switchboard supported within said closure member and having a plurality of contact plu thereon, electric connectors connecting eacsof said spring contacts to one of said switchboard contactplu a switch arm, a-n electric connector attac ed to one end of said rod and to saidswitch arm, a circuit making and breaking device interposed in said last mentioned electric connector, means outside of said clovsure for moving said switch arm to ut any' one of said batteries in circuit with t e lamp t bulb, and a handle secured to the outside of 95 the battery casing in a position whereb said circuit making and breakingdevice and said switch arm operatin means may be operatldell? the operators and in which the lamp JOHNiv. sE'NGER. JAMES REED. s THOMAS EUGENE MooRHEAD. 

